Relevant bibliographies by topics / Organosilice

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Organosilice'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Organosilice.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Organosilice"

1

Ide, Matthias, Els De Canck, Isabel Van Driessche, Frédéric Lynen, and Pascal Van Der Voort. "Developing a new and versatile ordered mesoporous organosilica as a pH and temperature stable chromatographic packing material." RSC Advances 5, no. 8 (2015): 5546–52. http://dx.doi.org/10.1039/c4ra15837g.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Mohd, Hanafi Ani, Maziati Akmal Mohd Hatta, and Raihan Othman. "Effect of Al Ions on Adsorption Efficiency of Mesoporous Organosilica for Water Treatment." Advanced Materials Research 415-417 (December 2011): 2024–31. http://dx.doi.org/10.4028/www.scientific.net/amr.415-417.2024.

Full text
Abstract:
Porous organosilica is a promising material to be applied in water treatment due to high adsorption capacity of contaminants. Sol-gel method was used to fabricate mesoporous organosilioca from triblock copolymers, poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) as the template and tetraethylorthosilicate as silicate source. The organosilica is doped with Al powder and Al2SO3 in order to evaluate the effect of ions on their adsorption capacity. It was demonstrated that the adsorption capacity is proportional to Al concentration, and inversely proportional to porosity. Metallic compound doped in organosilica enhances the remediation process and optimize the water treatment process. Moreover, impregnation the samples into cellulosic sponge improves the adsorption efficiency by 25%.
APA, Harvard, Vancouver, ISO, and other styles
3

Asefa, Tewodros, and Zhimin Tao. "Mesoporous silica and organosilica materials — Review of their synthesis and organic functionalization." Canadian Journal of Chemistry 90, no. 12 (December 2012): 1015–31. http://dx.doi.org/10.1139/v2012-094.

Full text
Abstract:
Mesoporous silica and organosilica materials are a class of nanostructured materials that have porous structures with tunable nanometer pores, large surface areas, high pore volumes, and, in some cases, well-ordered mesostructures. Furthermore, in the case of mesoporous organosilicas, the materials possess various types of organic functional groups. This review highlights the different synthetic methods developed for mesoporous silica and organosilica nanomaterials. The review also discusses the various synthetic strategies used to functionalize the surfaces of mesoporous silica materials and produce highly functionalized mesoporous materials. Rational design and synthetic methods developed to place judiciously chosen one or more than one type of functional group(s) on the surfaces of mesoporous silica materials and generate monofunctional and multifunctional mesoporous silica materials are also introduced. These organic functionalization methods have made possible the synthesis of organically functionalized mesoporous silicas and mesoporous organosilicas with various interesting properties and many potential applications in different areas, ranging from catalysis to drug delivery and biosensing.
APA, Harvard, Vancouver, ISO, and other styles
4

Omar, Suheir, and Raed Abu-Reziq. "Highly Active Ruthenium Catalyst Supported on Magnetically Separable Mesoporous Organosilica Nanoparticles." Applied Sciences 10, no. 17 (August 20, 2020): 5769. http://dx.doi.org/10.3390/app10175769.

Full text
Abstract:
A facile and direct method for synthesizing magnetic periodic mesoporous organosilica nanoparticles from pure organosilane precursors is described. Magnetic ethylene- and phenylene-bridged periodic mesoporous organosilica nanoparticles (PMO NPs) were prepared by nanoemulsification techniques. For fabricating magnetic ethylene- or phenylene-bridged PMO NPs, hydrophobic magnetic nanoparticles in an oil-in-water (o/w) emulsion were prepared, followed by a sol–gel condensation of the incorporated bridged organosilane precursor (1,2 bis(triethoxysilyl)ethane or 1,4 bis(triethoxysilyl)benzene), respectively. The resulting materials were characterized using high-resolution scanning electron microscopy (HR-SEM), high-resolution transmission electron microscopy (HR-TEM), energy-dispersive X-ray (EDX) spectroscopy, powder X-ray diffraction (XRD), solid-state NMR analysis, and nitrogen sorption analysis (N2-BET). The magnetic ethylene-bridged PMO NPs were successfully loaded using a ruthenium oxide catalyst by means of sonication and evaporation under mild conditions. The obtained catalytic system, termed Ru@M-Ethylene-PMO NPS, was applied in a reduction reaction of aromatic compounds. It exhibited very high catalytic behavior with easy separation from the reaction medium by applying an external magnetic field.
APA, Harvard, Vancouver, ISO, and other styles
5

Poscher, Vanessa, George S. Pappas, Oliver Brüggemann, Ian Teasdale, and Yolanda Salinas. "Hybrid Porous Microparticles Based on a Single Organosilica Cyclophosphazene Precursor." International Journal of Molecular Sciences 21, no. 22 (November 13, 2020): 8552. http://dx.doi.org/10.3390/ijms21228552.

Full text
Abstract:
Porous organosilica microparticles consisting of silane-derived cyclophosphazene bridges were synthesized by a surfactant-mediated sol-gel process. Starting from the substitution of hexachlorocyclotriphosphazene with allylamine, two different precursors were obtained by anchoring three or six alkoxysilane units, via a thiol-ene photoaddition reaction. In both cases, spherical, microparticles (size average of ca. 1000 nm) with large pores were obtained, confirmed by both, scanning and transmission electron microscopy. Particles synthesized using the partially functionalized precursor containing free vinyl groups were further functionalized with a thiol-containing molecule. While most other reported mesoporous organosilica particles are essentially hybrids with tetraethyl orthosilicate (TEOS), a unique feature of these particles is that structural control is achieved by exclusively using organosilane precursors. This allows an increase in the proportion of the co-components and could springboard these novel phosphorus-containing organosilica microparticles for different areas of technology.
APA, Harvard, Vancouver, ISO, and other styles
6

Makarychev, Yuri, Natalia Gladkikh, Ivan Arkhipushkin, and Yuri Kuznetsov. "Corrosion Inhibition of Low-Carbon Steel by Hydrophobic Organosilicon Dispersions." Metals 11, no. 8 (August 11, 2021): 1269. http://dx.doi.org/10.3390/met11081269.

Full text
Abstract:
This article proposes a method for obtaining stable hydrophobic inhibitor dispersions, where the micelle core contains a hydrophobic solvent, a corrosion inhibitor and an organosilane. Such compositions can be used as polymer-type corrosion inhibitors for low-carbon steel. Using electrochemical methods, corrosion tests and X-ray photoelectron spectroscopy, features of the formation of polymeric layers of hydrophobic organosilicon dispersions were studied.
APA, Harvard, Vancouver, ISO, and other styles
7

Li, Hongwei, Junhui Pan, Chengtao Gao, Mengyu Ma, Liangyu Lu, Yuzhu Xiong, and Fuping Dong. "Mercapto-Functionalized Porous Organosilica Monoliths Loaded with Gold Nanoparticles for Catalytic Application." Molecules 24, no. 23 (November 29, 2019): 4366. http://dx.doi.org/10.3390/molecules24234366.

Full text
Abstract:
Porous organosilica monoliths have attracted much attention from both the academic and industrial fields due to their porous structure; excellent mechanical property and easily functionalized surface. A new mercapto-functionalized silicone monolith from a precursor mixture containing methyltrimethoxysilane; 3-mercaptopropyltrimethoxysilane; and 3-mercaptopropyl(dimethoxy)methylsilane prepared via a two-step acid/base hydrolysis–polycondensation process was reported. Silane precursor ratios and surfactant type were varied to control the networks of porous monolithic gels. Gold nanoparticles were loaded onto the surface of the porous organosilica monolith (POM). Versatile characterization techniques were utilized to investigate the properties of the synthesized materials with and without gold nanoparticles. Scanning electron microscopy was used to investigate the morphology of the as-synthesized porous monolith materials. Fourier transform infrared spectroscopy was applied to confirm the surface chemistry. 29Si nuclear magnetic resonance was used to investigate the hydrolysis and polycondensation of organosilane precursors. Transmission electron microscopy was carried out to prove the existence of well-dispersed gold nanoparticles on the porous materials. Ultraviolet–visible spectroscopy was utilized to evaluate the high catalytic performance of the as-synthesized Au/POM particles
APA, Harvard, Vancouver, ISO, and other styles
8

Wang, Qian. "The Effect of Temperature Elevation on Microwave-Transmitting Property of Organosilicone-Matrix Radome." Materials Science Forum 848 (March 2016): 174–78. http://dx.doi.org/10.4028/www.scientific.net/msf.848.174.

Full text
Abstract:
In this paper, both the permittivity and the microwave transmittance properties of organosilicon-matrix composites under different temperatures have been studied. In order to investigate the reason for the changing of dielectric property, both TGA and high-temperature dielectric spectrum measurement have been carried out. A theoretical model of radome, with a temperature gradient distribution, has been built to analyze the dependence of microwave transmittance property on temperature. Based on the experimental results, we can optimize the effective operating temperature of this kind of organosilicone-matrix composites.
APA, Harvard, Vancouver, ISO, and other styles
9

Zebardasti, Ali, Mohammad Dekamin, and Esmail Doustkhah. "The Isocyanurate-Carbamate-Bridged Hybrid Mesoporous Organosilica: An Exceptional Anchor for Pd Nanoparticles and a Unique Catalyst for Nitroaromatics Reduction." Catalysts 11, no. 5 (May 12, 2021): 621. http://dx.doi.org/10.3390/catal11050621.

Full text
Abstract:
Hybridisation of mesoporous organosilicas (MO) to reinforce the surface capability in adsorption and stabilisation of noble metal nanoparticles is of great attention in generating/supporting noble metal within their matrices and transforming them into efficient heterogeneous catalysts. Here, we used a unique hybrid of organic-inorganic mesoporous silica in which pore profile pattern was similar to the well-known mesoporous silica, SBA-15 for catalysis. This hybrid mesoporous organosilica was further engaged as a support in the synthesis and stabilisation of Pd nanoparticles on its surface, and then, the obtained Pd-supported MO was employed as a heterogeneous green catalyst in the conversion of aqueous p-nitrophenol (PNP) to p-aminophenol (PAP) at room temperature with efficient recyclability.
APA, Harvard, Vancouver, ISO, and other styles
10

López, María I., Dolores Esquivel, César Jiménez-Sanchidrián, Pascal Van Der Voort, and Francisco J. Romero-Salguero. "Thiol-Functionalized Ethylene Periodic Mesoporous Organosilica as an Efficient Scavenger for Palladium: Confirming the Homogeneous Character of the Suzuki Reaction." Materials 13, no. 3 (January 30, 2020): 623. http://dx.doi.org/10.3390/ma13030623.

Full text
Abstract:
This work describes the synthesis of thiol-functionalized periodic mesoporous organosilicas (PMOs) prepared using the precursor 1-thiol-1,2-bis(triethoxysilyl)ethane, alone or mixed with 1,2-bis(triethoxysilyl)ethane. The thiol groups incorporated into the structure were found to be efficient for palladium binding. This has allowed these materials to be used as catalysts in the Suzuki cross-coupling reaction of bromobenzene and phenylboronic acid. Their performance has been compared to palladium-supported periodic mesoporous (organo)silicas and important differences have been observed between them. The use of different heterogeneity tests, such as hot filtration test and poisoning experiments, has provided a deep insight into the reaction mechanism and has confirmed that the reaction occurs in the homogeneous phase following a “release and catch” mechanism. Furthermore, the thiol-functionalized periodic mesoporous organosilica, synthesized using only 1-thiol-1,2-bis(triethoxysilyl)ethane as a precursor, has proven to be an efficient palladium scavenger.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Organosilice"

1

Moitra, Nirmalya. "Silices hybrides fonctionnelles : matériaux dérivés d'alcaloïdes pour organocatalyse ; réactions "click" pour le sol˗gel." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2011. http://www.theses.fr/2011ENCM0003.

Full text
Abstract:
Cette thèse s'intéresse à la préparation de silices hybrides organique/inorganiques à base de fragments alcaloïdes cinchona, et à une nouvelle méthode de synthèse de précurseurs silylés hydrolysables via une réaction ‘click' de CuAAC. La première partie de ce travail est dédiée à une présentation bibliographique du domaine de la catalyse supportée sur matériaux hybrides, et est principalement focalisée sur l'organocatalyse supportée, un champ de recherche en plein développement. Dans la seconde partie, différentes méthodes d'immobilisation d'alcaloïdes dans une matrice de silice sont décrites, dans le but de les utiliser comme organocatalyseurs pour une réaction de décarboxylation asymétrique. La troisième partie est dédiée à une nouvelle méthode de préparation de précurseurs silylés via une réaction de CuAAC. Cette méthodologie montre un potentiel important pour la formation de nouveaux composés fonctionnels. Finalement, la synthèse de nanoparticules de silice mésoporeuse contenant des groupes azoture ou alcyne et leur post-fonctionalisation sont présentées
This thesis deals with the preparation of organic-inorganic hybrid silica based on cinchona alkaloids fragments and with a new method of synthesis for hydrolysable silylated precursors via CuAAC “click” reactions. The first part of this work is dedicated to a bibliographic presentation of the area of supported catalysis on hybrid materials and is mainly focused on supported organocatalysis, an emerging area of research. In the second part, different methods for immobilization of alkaloids within a silica matrix are described aiming at using them as organocatalysts for an asymmetric decarboxylation reaction. The third part is devoted to a new method of preparation of silylated precursors by CuAAC “click” reactions. This methodology shows a high potential in the formation of new functional compounds. Finally the synthesis of mesoporous silica nanoparticles bearing azide or alkyne groups and their post-functionalization by CuAAC reactions are presented
APA, Harvard, Vancouver, ISO, and other styles
2

Hosokawa, Ricardo Shindi [UNESP]. "Delineação de padrões na superfície da poliamida por processo de plasma." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/147082.

Full text
Abstract:
Submitted by RICARDO SHINDI HOSOKAWA null (rickhoso@bol.com.br) on 2017-01-03T23:30:20Z No. of bitstreams: 1 Delineação de padrões na superfície da poliamida por processo de plasma.pdf: 4742915 bytes, checksum: 268d0bc1d9923e2f37c24eceb7007ce5 (MD5)
Approved for entry into archive by Juliano Benedito Ferreira (julianoferreira@reitoria.unesp.br) on 2017-01-05T18:24:40Z (GMT) No. of bitstreams: 1 hosokawa_rs_me_bauru.pdf: 4742915 bytes, checksum: 268d0bc1d9923e2f37c24eceb7007ce5 (MD5)
Made available in DSpace on 2017-01-05T18:24:40Z (GMT). No. of bitstreams: 1 hosokawa_rs_me_bauru.pdf: 4742915 bytes, checksum: 268d0bc1d9923e2f37c24eceb7007ce5 (MD5) Previous issue date: 2016-11-17
Neste trabalho foi investigada a possibilidade de se criar padrões regularmente distribuídos sobre a superfície da poliamida (PA), utilizando o processo de deposição de filmes em plasmas de baixa pressão. Para tal, um único procedimento foi empregado utilizando-se uma malha metálica comercial (60 μm) como máscara para delinear pilares na superfície da poliamida. Os plasmas de deposição foram gerados a partir de atmosferas contendo 70% de hexametildisiloxano (HMDSO) e 30% de oxigênio a uma pressão total de 23 Pa, já incluído o valor de 3 Pa referente à pressão de fundo. O plasma foi ativado pela aplicação do sinal de radiofrequência (13,56 MHz, 150 W) no suporte de amostras enquanto o eletrodo superior permaneceu aterrado. O tempo de deposição, t, foi alterado de 15 a 90 min. Na etapa inicial do trabalho o filme foi uniformemente depositado sobre o polímero sem a utilização de máscara. Uma segunda etapa de experimentos foi realizada, utilizando-se condições idênticas às anteriores, mas com o auxílio da trama metálica sobre as amostras para guiar a deposição do filme somente nos poros da máscara. Filmes organosilicones, compostos por estruturas granulares e com espessuras dependentes de t, foram uniformemente depositados sobre a PA quando a máscara não foi utilizada. A deposição do filme independentemente da condição de t, aumenta a rugosidade superficial e transforma a amostra inicialmente hidrofílica em hidrofóbica. Muito embora t afete de forma suave a composição química, estrutura molecular e a molhabilidade do filme, seu efeito na espessura da camada é substancial. Padrões na forma de pilares foram regularmente definidos na superfície da PA com a deposição do filme organosilicone e a utilização da máscara. A altura dos pilares cresce com t alcançando até 1 µm. Para os maiores valores de t empregados, as máscaras não atuaram efetivamente como sombra na região dos fios. Observou-se que a molhabilidade da superfície ficou estável com o tempo de envelhecimento e não foi afetada pelos padrões.
In this work it was investigated the possibility of creating patterns regularly distributed on the surface of the polyamide (PA), using the process of film deposition in low pressure plasmas. For such, a single procedure was employed using a commercial metallic mesh (60 μm) as a mask to delineate pillars on the polyamide surface. The depositing plasmas were generated from atmospheres containing 70% of hexamethyldisiloxane (HMDSO) and 30% of oxygen at a total pressure of 23 Pa, already included the amount of 3 Pa related to the background pressure. The plasma was activated applying a radiofrequency signal (13.56 MHz, 150 W) to the sample holder while grounding the topmost electrode. Deposition time, t, was changed from 15 to 90 min. In the initial stage of the work the film was evenly deposited on the polymer without the usage of mask. A second step of experiments was performed, using the same conditions as earlier, but with the aid of the metallic frame on the samples to guide the film deposition only in the pores of the mask. Organosilicones films consisting of granular structures and thickness dependent of t were evenly deposited on the PA when the mask was not used. The film deposition, independently of condition of t, increases the surface roughness and transforms the sample initially hydrophilic to hydrophobic. Although t affects smoothly the chemical composition, molecular structure and wettability of the film, its effect on the layer thickness is substantial. Patterns in the form of pillars were regularly defined on the surface of PA with the organosilicon film deposition and the usage of the mask. The height of the pillars grows with t reaching up to 1 micrometers. For higher values of t, the masks did not act effectively as shadow in the wire region. It was observed that the surface wettability was stable with the aging time and it was not affected by the patterns.
APA, Harvard, Vancouver, ISO, and other styles
3

Noureddine, Achraf. "Approches Click en Chimie Sol-Gel." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2014. http://www.theses.fr/2014ENCM0005/document.

Full text
Abstract:
Nous visons dans ce travail de thèse à développer une méthodologie de fonctionnalisation par chimie click des silices hybrides synthétisées par voie sol-gel. La réaction click de cycloaddition azoture-alcyne catalysée au cuivre (CuAAC) offre une tolérance exceptionnelle pour les fonctions organiques en plus de conversions très élevées. Dans cette optique, nous avons mis en œuvre en premier lieu des matériaux clickables à base d'organosilice pure (organosilice à mésoporosité périodique (PMO) et silsesquioxanes pontés (BS)) qui ont permis une conversion quasi-quantitative de greffage par CuAAC. Nous avons ensuite utilisé cette particularité pour contrôler les propriétés de surface des BS en modifiant leur caractère hydrophile/lipophile. Dans le second axe de travail, nous nous sommes intéressés à l'apport de la chimie click pour la préparation de nanoparticules mésoporeuses de silice multifonctionnelles, dites mécanisées, pour des systèmes à délivrance contrôlée de principes actifs
The present work aims to develop a trustful methodology of functionalization for hybrid silica materials made by the sol-gel process using the copper-catalyzed alkyne-azide cycloaddition (CuAAC)Click reaction. This transformation can be highly useful in materials science thanks to its high conversions and the excellent functional group tolerance. In this prospect, we have synthesized fully clickable bridged silisesquioxanes and periodic mesoporous organosilica that show high extents of click grafting. CuAAC was then used for tailoring the surface of bridged silsesquioxane and fine-tuning the hydrophilic/lipophilic balance. Finally, the click reaction was used as an efficient way to obtain multiply functionalized mesoporous silica nanoparticles in order to make nanomachines for controlled delivery of cargo molecules
APA, Harvard, Vancouver, ISO, and other styles
4

Tran, Thanh Hien. "Couches minces copolymères plasma anti-buée élaboration et caratérisation : élaboration et caratérisation." Thesis, Le Mans, 2019. http://www.theses.fr/2019LEMA1012/document.

Full text
Abstract:
Le travail de la thèse est focalisé sur l’ élaboration plasma d’un revêtement multicouches avec une couche supérieure anti-brouillard et une couche inférieure dite barrière sur un polycarbonate. L’ensemble des travaux est divisé en 3 parties: élaborations des deux monocouches barrière ou antibuée puis dépôt de la multicouche barrière - antibuée. La polymérisation plasma de la couche barrière est effectuée à partir d’un mélange de dioxygène et d’un précurseur organosilicié : l’hexaméthyledisiloxane ou le 2,4,6,8-tétraméthylcyclotétrasiloxane ou bien encore le triéthoxyfluorosilane. La caractérisation des couches minces obtenues repose sur la spectroscopie Infrarouge à Transformée de Fourier , la spectroscopie de photoélectrons X et la microscopie à force atomique. L’influence des conditions de dépôt plasma comme la puissance, la proportion monomère/dioxygène, le temps du dépôt sur la structure chimique et l’hydrophobicité de la surface des différents types de couches organosiliciées est étudiée. Les résultats de la perméation avec l’eau liquide ou le dioxygène montrent que la propriété barrière des couches organosiliciées non fluorées est meilleure que pour la couche fluorée. L’élaboration de copolymères anti-buée repose sur l’utilisation de combinaisons entre deux précurseurs hydrophile et hydrophobe en voie plasma pulsé. Les précurseurs tels que le 2-(diméthylamino)éthyl méthacrylate ou l’acide acrylique sont choisis pour leur hydrophile alors que le 1H,1H,2H-perfluoro-1-décène représente la partie oléophobe. La propriété anti-brouillard et sa stabilité à long terme après un vieillissement thermique ou en milieu humide est dépendante de leurs structure et morphologie
The PhD work is focused on the deposition of a multilayer coating with an anti-fog top layer obtained thanks to the plasma copolymerization of hydrophilic and hydrophobic monomers and an intermediate barrier layer, also obtained by plasma deposition on polycarbonate. The work is divided into 3 parts: the independently preparations of the two monolayers, barrier and anti-fogging ones, then the barrier-antifog multilayer deposition. The characterization of the thin films obtained is based on Fourier Transform Infrared Spectroscopy, X-ray photoelectron spectroscopy and atomic force microscopy.The barrier plasma-layer is issued from by the mixture of dioxygen and one of these three organosilicon precursors : hexamethyledisiloxane ; 2,4,6,8-tetramethylcyclotetrasiloxane ; triethoxyfluorosilane. The influence of the plasma conditions such as discharge power, monomer/dioxygen ratio, deposition duration on the chemical structure and the hydrophobicity of the different types of the organosilicon layers was studied. The results of permeation with liquid water or dioxygen show that the barrier property of the organosilicon layer is more efficient than that of the fluorinated layer. Anti-fog plasma-copolymer is synthetized from two hydrophilic and hydrophobic precursors deposited by pulsed plasma mode. The precursors such as 2-(dimethylamino) ethyl methacrylate and acrylic acid were selected for the hydrophilic part while the 1H, 1H, 2H-perfluoro-1-decene will be associated to the oleophobic part. The dependence of the chemical structure and the morphology of the anti-fog layers is studied according to the hydrophilic/oleophobic distribution and the deposition time
APA, Harvard, Vancouver, ISO, and other styles
5

Nguyen, Thy Phuong. "Hybrides organiques-inorganiques organisés par 'liquid crystal templating' de précurseurs ioniques." Montpellier 2, 2009. http://www.theses.fr/2009MON20201.

Full text
Abstract:
Une série des précurseurs contenant des sous-structures cationiques organiques à base d'entités imidazolium, guanidinium et ammonium ainsi que des précurseurs neutres contenant des sous-structures amines été synthétisé. Ces précurseurs ont été utilisés pour la synthèse de matériaux nanostructurés par des processus de 'liquid crystal templating'. Le processus la formation de matériaux nanostructurés par hydrolyse-polycondensation a été étudiée. La structuration des matériaux a été réalisée en particulier par l'utilisation de différents agents tensioactifs. Les facteurs principaux influençant sur la structuration des matériaux ont été étudiés pour trouver des conditions optimales pour la synthèse de matériaux nanostructurés. Des matériaux structurés présentant des architectures régulières hexagonaux 2D ont été obtenus avec différents précurseurs. Pour obtenir ces structures mésoporeuses organisées hexagonales, l'ajout d'un précurseur de silice s'avérait nécessaire dans le cas de précurseurs disposant d'une flexibilité élevée au niveau moléculaire. Pour d'autres précurseurs présentant une rigidité moléculaire importante, la formation de phases structurées a pu être réalisée sans ajout d'une source de silice. Finalement, nous avons développé une nouvelle stratégie de structuration qui met en jeu de interactions spécifiques entre des précurseurs cationiques et des tensioactifs anioniques. Ces matériaux nanostructurés contenant des sous-structures amine et ammonium présentent une grande surface spécifiques et une grande accessibilité des sites organiques. Ces propriétés font de ces matériaux des systèmes de choix pour des applications en catalyse ou en séparation
A series of precursors containing organic cationic sub-structures such as imidazolium, guanidinium, and ammonium entities and several neutral precursors containing amino groups were successfully synthesized. These precursors were used for the synthesis of nanostructures silica hybrid materials or functionalized silica materials containing ionic substructures via template directed hydrolysis polycondensation procedures using various structure directing agents. The main factors influencing the structuring of the materials in the presence of different types of surfactant were studied and the optimal condition for the synthesis of nanostructured materials were found. 2D hexagonal structured materials have been obtained for different precursors both featuring high flexibility and high molecular size and high molecular rigidity. The addition of a silica source such as TEOS appeared to be necessary especially when rather flexible precursors were used. A new strategy was introduced permitting the structuring of materials bearing cationic substructures. This process is based on specific precursor-surfactant interactions and allowed the synthesis of 'periodic mesoporous organosilicas ' bearing amine and ammonium substructures with high specific surface areas and a high accessibility of the organic sites. Due to these features, these materials have large potential in the fields of catalysis and separation
APA, Harvard, Vancouver, ISO, and other styles
6

Voisin, Doria. "Structuration d’organosilices : assemblage covalent et auto-organisation de T8- silsesquioxanes octa-fonctionnalisés." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2016. http://www.theses.fr/2016ENCM0017/document.

Full text
Abstract:
Le présent travail vise la synthèse d’organosilices nano-structurées à partir de briques élémentaires de silsesquioxanes polyédriques fonctionnalisées (T8-POSS) de structure cube (RSiO1,5)8. L’assemblage de briques fonctionnelles T8-POSS a été étudié selon deux voies : par des interactions fortes en formant des liaisons covalentes et par des interactions faibles en formant des liaisons hydrogène.La première partie décrit la formation de réseaux hybrides covalents à partir de structure T8 POSS portant huit fonctions aldéhydes. La synthèse et la structure cristalline de ces « cubes » fonctionnalisés sont décrites et la réactivité des fonctions aldéhydes est examinée. La formation de liaisons C=N par réaction d’amines conduit à des réseaux tridimensionnels grâce à la formation de ponts organiques bis-imines joignant les unités silsesquioxanes. Bien que la formation d’imine soit réversible, les solides obtenus ne présentent pas d’ordre à longue distance. La formation de liaisons C=C, dans des conditions de synthèse non réversibles, par réaction de bis-ylures de phosphonium avec les aldéhydes a également été étudiée. Ces réactions de type Wittig engendrent la formation de réseaux hybrides amorphes contenant des sous-structures phenylène-vinylènes dotées de propriétés de fluorescence. La deuxième partie décrit la synthèse de nouvelles molécules de T8-POSS, possédant des fonctions organiques amines ou acides carboxyliques capables d’interactions intermoléculaires grâce à des liaisons hydrogène. Ces interactions permettent l’assemblage des dérivés du T8-POSS fonctionnalisés par huit fonctions acides carboxyliques en un réseau 3D ordonné. Les briques élémentaires T8- POSS s’auto-assemblent par dimérisation des fonctions acides pour engendrer des silices hybrides cristallines. Les structures ont été déterminées par diffraction de rayons X. Les fonctions acides carboxyliques sont intéressantes non seulement par leur capacité à former des liaisons hydrogènes mais également par leur aptitude à former des carboxylates métalliques. Ces derniers ouvrent des perspectives pour la formation de réseaux d’oragnosilices incorporant des métaux
The present work aimed at synthesising nano-structured organosilicas using polyhedral silsesquioxane building blocks (T8-POSS) having a cube structure. The assembly of T8-POSS building blocks to form a 3D network was studied in two ways: first by formation of strong covalent bonds and secondly by formation of weak hydrogen bonds.The first part described the formation of covalent hybrid networks from T8-POSS structures with eight aldehyde functional groups. The synthesis and crystal structure of these functionalised silsesquioxane cubes is described and the reactivity of the aldehyde groups is studied. The formation of C=N bonds upon reaction with amines lead to tree-dimensional networks upon formation of bis-imine bridges linking the silsesquioxane units. Despite the imine formation was reversible, the resulting solids were amorphous materials and exhibited no long distance order. The formation of C=C bonds, under non-reversible reaction conditions, was achieved by reaction of phosphonium bis-ylides. The Wittig type reactions generated amorphous hybrid networks containing bridging phenylene-vinylene substructures with fluorescence properties.The second part described the synthesis of new functionalised T8-POSS cubes with eight amine or carboxylic acid functions capable of intermolecular interactions by hydrogen bonding. It allowed the assembly of the octa-carboxylique acid cubes to form an ordered 3D hybrid network. The T8-POSS building blocks self-assembled upon dimerization of the acid groups and generated crystalline hybrid silicas. The crystal structures were determined by X-ray diffraction. The use carboxylic acid groups is interesting because of its ability to form hydrogen bonds and also because of its ability to form metal carboxylate derivatives. It could lead to hybrid metal organic silica frameworks
APA, Harvard, Vancouver, ISO, and other styles
7

El-Kaddar, Yousef Younis. "Organosilicon reaction mechanisms." Thesis, University of Sussex, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375169.

Full text
Abstract:
This thesis is concerned with the preparation and reactions of some highly sterically hindered organosilicon compounds, mainly of the type TeiSiMe2X where Tsi denotes the (Me3Si)3C group. The first detailed study of the reactions of TsiS1Me20CN has shown that reactions with NaN3 in MeOH or KSCN or KOCN in MeCN give exclusively the corresponding TsiSiMe2X compounds (X = N3, NCS, or NCO), whereas those with other salts, viz. LiCl, CsF, KSCN, and KOCN, give the TsiSiMe2X species along· with other products, including in many cases TsiSiMe2NCO and TsiSiMe20H (from traces of water), and (in MeOH) TsiSiMe20Me. The reaction with MeOH alone was never found to give less than 10% ot TslSiMe20H, along with the expected TsiSiMe20Me, however carefully the MeOH was dried. The extreme sensitivity of the cyanate towards water was illustrated by the fact that the rate ot solvolysis in 'dry' MeOH was increased by~. 90% by addition of 0.05 vol-% of H2o, and the hydroxide was the sole product, whereas the rate for the triflate TsiSiMe2- OS02CF3 was increased by only 13% and the product was a 60:40 mixture of TsiSiMe20Me and TsiSiMe20H. The rate constant for the triflate increased linearly with the water concentration but that of the cyanate did not. The presence of NaOMe in MeOH led to rapid isomerization of the cyanate to the isocyanate, TsiSiMe2NCO, with the rate of isomerization being proportional to the base concentration: a possible explanation of this effect of base is suggested. Isomerization catalysed by ICI in CC14 was found to be of ca. second order with respect to both the cyanate and the IcI: A detailed kinetic study has been carried out of the the reactions of TsiSiMe2X compounds, with X c I, Br, Cl, or ON02' with various alkali metal salts, MY, viz. NaN3' CsF, KSCN, and KOCN in MeOH and with KSCN in MeCN. For X • I, Br, or Cl, the reactions have been shown to be much more complex than was previously thought, the compounds TsiSiMe20Me, TsiSiMe20H, and (Me3Si}2CHSiMe2oMe commonly being formed along with TsiSiMe2Y. The order of effectiveness of the salts in the formation of TsiSiMe2Y is CsF > NaN3 > KSCN > KOCN, except that for X - I the order for CsF and NaN3 is reversed. Approximate values of the activation parameters have been obtained: the activation entropies have very high negative values, consistent with formation of a very crowded transition state. The nitrate is markedly more reactive even than the iodide, and gives cleaner conversions into TsSiMe2Y compounds: the activation energies are much lower and the activation entropies much more negative than those tor the halides. Reactions of the compounds (Me3Si)2C(SiMe2H)(SiMe2Cl) with alkali metal salts have been shown to be much faster than those of TsiSiMe2Cl, casting doubt on an earlier suggestion that the ease of solvolysis of the former chloride might be due to anchimeric assistance by y-H.
APA, Harvard, Vancouver, ISO, and other styles
8

Bo, Yingjian. "Methods in organosilane assembly." Diss., Temple University Libraries, 2012. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/213502.

Full text
Abstract:
Chemistry
Ph.D.
Dialkylsilanediols are a novel class of non-hydrolyzable analogues of the tetrahedral intermediate of amide hydrolysis, shown to be good inhibitors of HIV-1 protease, angiotensin converting enzyme (ACE), and thermolysin. An impediment to utilization of these silanediol structures, however, has been the methods for their assembly. This research describes the reductive lithiation of hydridosilanes and alkoxysilanes, and the use of the resulting silyl anions to develop efficient methods to synthesize silanediol precursors. In the first part of research, lithiation of hydridosilanes was studied. As part of this study, a simple 1H NMR method was developed for monitoring and analyzing the progress of lithiation. In addition, this method was converted to a titration for silyllithium reagents using BHT as an internal standard. Silanediols 107 and 177 are analogues of a potent chymase inhibitor, NK-3201 (82). In the second part, diphenylsilanes 108 and 170, precursors to silanediols 107 and 177, were synthesized using addition of silyllithium to sulfinimine 113 as a key step. In the third part, lithiation of alkoxysilanes was studied. (Si,O)-Dianions, generated from lithiation of silane alcohol 175 or 2,2-diphenyl-1-oxa-2-silacyclopentane (225), were reacted with a wide variety of electrophiles to give potentially useful silicon-containing building blocks. Addition of the (Si,O)-dianion 284 to sulfinimines gave silanediol inhibitor precursors with full control of stereochemistry. In the last part, a new method featuring 1,1-diphenyl-2-azaallyllithium chemistry were utilized to synthesize a series of protected α-amino silanes 323, 329 - 331.
Temple University--Theses
APA, Harvard, Vancouver, ISO, and other styles
9

Mun, Ellina A. "Functionalised organosilica nanoparticles : synthesis, mucoadhesion and diffusion." Thesis, University of Reading, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.659018.

Full text
Abstract:
Organosilica nanoparticles, due to their versatile properties, attract considerable attention for pharmaceutical applications. The first chapter of this thesis gives an introduction to organosilica materials and traditional methods of their synthesis, provides a literature review on functionalisaUon of silica nanoparticles, in particular PEGylation, and describes recently investigated routes of their application in pharmaceutical science. This is followed by a brief description of methods and techniques used in the current study for synthesis and characterisation of organosilica nanoparticles. Chapter 3 represents a novel size-controlled method of synthesis of thiolated and PEGylated organosilica nanoparticles from 3-mercaptopropyltrimethoxysilane (MPTS) using various organic solvents as media. The mechanism of the nanoparticle formation is proposed, the dependence of nanoparticles size on solvent's dielectric constant is determined, and other factors affecting the nanoparticle size are investigated. Thiol-groups on the surface of organosilica nanoparticles are available for a direct conjugation. Therefore, their surfaces were funcUonalised with two types of fluorescent dyes and PEG maleimide of two molecular weights (750and 5000 Oa). Additionally, polymer- and surfactant-templated mechanisms of MPTS nanoparticle formaUon are reported. The synthesis chapter is followed by studying the properties of thiolated and PEGylated organosilica nanoparticles. Mucoadhesive properties of silica nanoparticles were investigated using a newlyintroduced in vitro method assessing their retention ability on the urinary bladder by the means of fluorescence microscopy. The main factors affecting mucoadhesive properties of MPTS nanoparticles were revealed and thiolated nanoparticles were demonstrated to be promising mucoadhesive materials for intravesical drug delivery. PEGylated nanoparticles were found to be less mucoadhesive which led to the hypothesis of providing better permeation by PEGylation. This was considered in the subsequent chapter (chapter 5), studying the barrier functions of the cornea using thiolated and PEGylated nanoparticles. The "whole eye" in vitro method combined with the fluorescence microscopy demonstrated a good permeation of the latter through de-epithelialised ocular tissue into the stroma. This revealed the interaction of nanoparticles with the corneal surface to be a more impcrtant factor than the particle size, determining their permeation ability. As most organs of the human body are covered with biological hydrogels, the ability of silica nanoparticles to permeate through biological tissues has risen an interest in studying their capability to diffuse through such gels. Therefore, the diffusion of thiolated and PEGylated nanoparticles in different polymer solutions, which were selected as prototypes of biological hydrogels, was studied using NanoSight tracking analysis with fluorescent detection. The main factors affecting the diffusion of organosilica nanoparticles were revealed, and it was demonstrated that the presence of strong attractive interactions between the nanoparticles and macromolecules present in solutions can hamper the diffusion. This was followed by studying biocompatible properties of organosilica nanoparticles using an alternative to traditional methods, a slug mucosal irritation test, revealing their non-irritant nature. Finally, the general results of the current study are summarised and discussed in the last chapter of the thesis, proposing plans for the future work and expansion of the investigations on organosilica nanoparticles presented so far.
APA, Harvard, Vancouver, ISO, and other styles
10

Rahmani, Saher. "Élaboration de nanoparticules de silice mésoporeuse et d'organosilice pour des applications en nanomedecine." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTT190.

Full text
Abstract:
Ces travaux de thèse sont dédiés à l’élaboration, la caractérisation et l’application des nanoparticules de silice mésoporeuse (MSNs) et d’organosilice (PMOs). Ces nanomatériaux qui font l’objet d’un grand intérêt dans la communauté scientifique, présentent des propriétés intéressantes telles que: une surface spécifique élevée, le contrôle de la morphologie, la porosité ajustable et enfin la facilité de fonctionnalisation de leur surface par des groupes fonctionnels. Dans cette thèse, deux familles de nanoparticules ont été étudiées : les nanoparticles de silice mésoporeuse (MSNs) et les nanoparticules d’organosilice.Premièrement, les MSNs synthétisées avec une taille de 200 nm et une surface spécifique de 810 m2/g ont été fonctionnalisées d’une manière covalente avec des antioxydants, un polyphénol l’acide caféique (CAF) qui est lié par sa fonction acide (-COOH) à une fonction amine (préalablement greffée sur la silice), ou un flavonoïde la ruine (RUT) qui est liée par l’isocianatopropylthrietoxysilane comme intermédiaire silicique. Les antioxydants ont été greffés afin de diminuer le stress oxydant. Les effets cellulaires sont étudiés sur deux lignées, une lignée de cellules issues d’un carcinome colo-rectal (lignée Caco-2) et une lignée tumorale de la peau (lignée HaCaT).Dans une deuxième partie, nous avons étudié l’influence de l’ajout d’un co-solvant «éthanol» au cours de la synthèse sur la morphologie des nanoparticules de silice mésoporeuse qui entraine la formation de nanoparticules de forme bâtonnet (MSNR) ainsi que le changement de structure de la poosité. Par la suite, les NPs de forme sphérique MSNA et les NPs de forme bâtonnet MSNR ont été chargées par la doxorubicine (DOX) et testées in vitro sur des cellules MCF-7.De plus, les synthèses de nanoparticules d’organosilice ont été réalisées. Ces nanomatériaux sont exclusivement synthétisés à partir de bis (3-méthoxysilyl propyl) -N-méthylamine et bis (triéthoxysilylpropyl) amine. Tout d'abord, la synthèse des NPs d’organosilice à cavité (HPONP) est decrite. Les HPONP ont été utilisés alors pour la délivrance de méthotrexate dans des cellules MCF-7. Deuxièmement, la synthèse d'autres types de NP d’organosilice (HMONP) obtenus par condensation du précurseur de bis (3-méthoxysilyl propyl) -N-méthylaminea été étudiée. Afin d'élargir la cavité des NP, nous avons signalé l'utilisation de TEB comme agent gonflement conduisant à la synthèse des HMLONP à large cavité. La morphologie et les compositions des NP ont été complètement caractérisées par diverses techniques et la délivrance de pepstatine à partir de HMLONP est envisagée. Pour ajouter une biodégradabilité aux nanocarriers, des nanoparticules mixtes ont été synthétisées par condensation de la bis (3-méthoxysilyl) propylméthylamine et du bis [3-(triéthoxysilyl) propyl] disulfure. Différentes nanoplatformes ont été conçues et entièrement caractérisées. La biodégradabilité a été évaluée dans des conditions quasi physiologiques. En outre, la voie de synthèse a été modifiée pour concevoir des nanoparticules d'organosilice à base d'éthylène ou de porphyrine. Ces nanoparticules ont été testées in vitro avec des cellules de cancer du sein et utilisées pour la délivrance de méthotrexate et de gemcitabine monophosphate.Enfin, on a décrit les nanoparticules organosilice de type cœur coquille. La coquille de ces nanoparticules obtenue par condensation du bis- (triéthoxysilyl) éthane et du bis (3- (triéthoxysilyl) propyl) tétrasulfure. Ces nanoparticules biodégradables du fait des groupements tetrasulfure ont été testées in vitro avec des cellules de cancer du sein pour l'imagerie et la délivrance d’un anticancéreux
This work is dedicated to the development, characterization and application of nanoparticles of mesoporous silica (MSNs) and organosilica (PMOs) nanoparicles. Silica nanoparticles became the subject of intense research worldwide for many reasons: their unique chemical and physical characteristics, high biocompatibility, various shapes ranging from spheres to rods with tunable diameter, easily functionalizable surface, and the ability to be used as a shell on different type of inorganic nanoparticles such as gold, iron oxide, lanthanide nanoparticles. In this dissertation mesoporous silica NPs and organosilica NPs have been designed, optimized and fully characterized. These two types of silica NPs have been applied for biological applications (drug delivery and bioimaging).First, mesoporous silica nanoparticles (MSNs) were designed and were covalently coated with antioxidant molecules, namely, caffeic acid (MSN-CAF) or rutin (MSN-RUT), in order to diminish the impact of oxidative stress induced after transfection into cells. Two cellular models involved in the entry of nanoparticles in the body were used for this purpose: the intestinal Caco-2 and the epidermal HaCaT cell lines. Rutin gave the best results in terms of antioxidant capacities preservation during coupling procedures, cellular toxicity alleviation, and decrease of ROS level after 24 h incubation of cells with grafted nanoparticles.Secondly, we studied the control of the shape of MSNs by the addition of ethanol (EtOH) as cosolvent. Spherical (MSNA) or Rod MSNs (MSNR) were obtained, and then loaded loaded with doxorubicin and incubated with MCF-7 breast cancer cells. MSNA and MSNR particles were efficient in killing cancer cells but their behaviour in drug delivery was altered on account of the difference in their morphology.Then, the syntheses of new organosilica nanoparticles are reported. These nanomaterials are exclusively synthesized from bis (triethoxysilylpropyl) amine (BTSPA), bis (3-methoxysilyl propyl) -N-methylamine (BMSPMA) and bis- (triethoxysilyl) ethane precursors. First, it is reported the synthesis of hollow organosilica NPs (HPONPs) obtained through the condensation of bis (triethoxysilylpropyl) amine precursor by sol-gel process. HPONPs were used then for methotrexate delivery in MCF-7 cells. Secondly, it is reported the synthesis of other types of hollow organosilica NPs (HMONPs) obtained through the condensation of bis (3-methoxysilyl propyl) -N-methylamine precursor. In order to enlarge the cavity of NPs, we reported the use of TEB as swelling agent leading to the synthesis of HMLONPs. The morphology and the compositions of the NPs were fully characterized by various techniques and the pepstatin delivery from HMLONPs are under considaration. To add biodegradability to the nanocarriers, mixed nanoparticles were synthesized through the condensation of bis (3-methoxysilyl) propyl methylamine and the bis [3-(triethoxysilyl) propyl] disulfide. Different nanoplatforms were designed and fully characterized. The biodegradability was assessed in near-physiological conditions. Furthermore, the synthesis pathway was modified to design ethylene-porphyrin based organosilica nanoparticles. These nanoparticles were tested in vitro with breast cancer cells and used for methotrexate and gemcitabine monophosphate delivery.Finally, gold core shell mixed organosilica nanoparticles were described. The mixed shell of these nanoparticles was obtained by the co-condensation of bis- (triethoxysilyl) ethane and the bis (3-(triethoxysilyl) propyl)tetrasulfide. These biodegradable nanoparticles were tested in vitro with breast cancer cells for photon fluorescence imaging and core shell NPs were studied for drug delivery
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Organosilice"

1

Chandra, Grish, ed. Organosilicon Materials. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-540-68331-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Ha, Chang-Sik, and Sung Soo Park. Periodic Mesoporous Organosilicas. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-2959-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

I͡A, Lukevit͡s Ė. Nucleoside synthesis: Organosilicon methods. New York: Ellis Horwood, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Alan, Bassindale, and Gaspar P. P, eds. Frontiers of organosilicon chemistry. Cambridge: Royal Society of Chemistry, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

I͡A, Lukevit͡s Ė. Molecular structure of organosilicon compounds. Chichester: E. Horwood, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Larson, G. L. Ionic and organometallic-catalyzed organosilane reductions. Hoboken, N.J: Wiley, 2010.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

McInall, Mark David. Non-ionic surfactant assembly of nanoporous organosilica frameworks. Sudbury, Ont: Laurentian University, School of Graduate Studies, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Alekseev, P. G. Thermophysical properties of organosilicon compounds: A handbook. New York: Begell House, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Johann, Weis, and Auner Norbert, eds. Organosilicon chemistry V: From molecules to materials. Weinheim: Wiley-VCH, 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Weis, Johann, and Norbert Auner. Organosilicon chemistry III: From molecules to materials. Weinheim: Wiley-VCH, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Organosilice"

1

Barton, Thomas J., and Philip Boudjouk. "Organosilicon Chemistry." In Advances in Chemistry, 3–46. Washington, DC: American Chemical Society, 1989. http://dx.doi.org/10.1021/ba-1990-0224.ch001.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Rochow, Eugene G. "Organosilicon Compounds." In Inorganic Syntheses, 50–56. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132340.ch13.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Hiyama, Tamejiro, and Eiji Shirakawa. "Organosilicon Compounds." In Topics in Current Chemistry, 61–85. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-45313-x_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Krska, Shane W., David Y. Son, and Dietmar Seyferth. "Organosilicon Dendrimers." In Silicon-Containing Polymers, 615–41. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-3939-7_23.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Borst, Christopher L., William N. Gill, and Ronald J. Gutmann. "CMP of Organosilicate Glasses." In Chemical-Mechanical Polishing of Low Dielectric Constant Polymers and Organosilicate Glasses, 97–118. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-1165-6_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Moberg, William K., Gregory S. Basarab, John Cuomo, and Paul H. Liang. "Biologically Active Organosilicon Compounds." In ACS Symposium Series, 288–301. Washington, DC: American Chemical Society, 1987. http://dx.doi.org/10.1021/bk-1987-0355.ch026.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Styan, K., M. Abrahamian, E. Hume, and L. A. Poole-Warren. "Antibacterial Polyurethane Organosilicate Nanocomposites." In Advanced Biomaterials VII, 757–60. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-436-7.757.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Kunai, Atsutaka, Osamu Ohnishi, Masataka Morishita, Joji Ohshita, and Mitsuo Ishikawa. "Electrochemistry of Organosilicon Compounds: From Halosilanes to Ethynylsilanes, Siloles, and Organosilicon Polymers." In Novel Trends in Electroorganic Synthesis, 363–66. Tokyo: Springer Japan, 1998. http://dx.doi.org/10.1007/978-4-431-65924-2_110.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Reichmanis, Elsa, Anthony E. Novembre, Regine G. Tarascon, Ann Shugard, and Larry F. Thompson. "Organosilicon Polymers for Microlithographic Applications." In Advances in Chemistry, 265–81. Washington, DC: American Chemical Society, 1989. http://dx.doi.org/10.1021/ba-1990-0224.ch016.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Hiyama, Tamejiro. "Organosilicon and Relating Organotin Chemistry." In Organometallics in Synthesis, 373–544. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118484722.ch3.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Organosilice"

1

Stanczyk, Wlodzimierz A., and Tomasz Ganicz. "Mesomorphic organosilicon polymers." In Liquid Crystals, edited by Marzena Tykarska, Roman S. Dabrowski, and Jerzy Zielinski. SPIE, 1998. http://dx.doi.org/10.1117/12.301286.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Trens, P., and R. Denoyel. "Thermodynamics of organosilane adsorption." In The proceedings of the 53rd international meeting of physical chemistry: Organic coatings. AIP, 1996. http://dx.doi.org/10.1063/1.49486.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Corrie, Simon, Gwen Lawrie, Bronwyn Battersby, and Matt Trau. "Organosilica Particles for DNA Screening Applications." In 2006 International Conference on Nanoscience and Nanotechnology. IEEE, 2006. http://dx.doi.org/10.1109/iconn.2006.340599.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Неёлова, Ольга Владимировна, Людмила Муратовна Кубалова, and Анна Петровна Деревщикова. "TEST METHODS FOR POLYORGANOSILOXANE COMPOSITIONS USED AS PROTECTIVE COATINGS IN ELECTRONIC INSTRUMENTATION." In Высокие технологии и инновации в науке: сборник избранных статей Международной научной конференции (Санкт-Петербург, Май 2020). Crossref, 2020. http://dx.doi.org/10.37539/vt185.2020.41.14.012.

Full text
Abstract:
Представлен обзор по методам испытаний кремний органических полимерных композиций, применяемых в качестве защитных покрытий в современном электронном приборостроении. A review is given of testing methods for organosilicon polymer compositions used as protective coatings in modern electronic instrumentation.
APA, Harvard, Vancouver, ISO, and other styles
5

Bialecka-Florjanczyk, Ewa, Tomasz Ganicz, Irma Sledzinska, Wlodzimierz A. Stanczyk, and Jan Przedmojski. "Comblike organosilicon liquid-crystal polymers." In Liquid and Solid State Crystals: Physics, Technology, and Applications, edited by Jozef Zmija. SPIE, 1993. http://dx.doi.org/10.1117/12.156974.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Kawasaki, Toru, Motohiro Aizawa, Hidehiro Iizuka, Koji Yamada, and Mitsuo Kugimoto. "Investigations and Countermeasures for Deactivation of the Hydrogen Recombination Catalyst at Hamaoka Unit 4 and 5." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29155.

Full text
Abstract:
At Hamaoka Unit 4 and 5, the hydrogen concentration in the outlet of off-gas recombiner had increased, and the reactors could not continue start-up operation. Therefore, we investigated the causes of the deactivating the recombination reaction and selected appropriate countermeasures to the plants. From our investigation, two types of deactivation mechanism are found. One of the causes was decreasing the active surface area of alumina as support material by the dehydrative condensation. The other cause was poisoning of the catalyst by organic silicon compound. The organic silicon was introduced from organosilicon sealant used at the junctions of the low-pressure turbine. We also found that the boehmite rich catalyst was deactivated more easily by the organic silicon than gamma alumina because boehmite had a lot of hydroxyl groups. Finally, we estimated that the deactivation of the hydrogen recombination catalysts was caused by combined two factors, which are characteristics of boehmite catalyst support and the poisoning by the organic silicon on the catalyst surface. As the countermeasures, the boehmite was changed into more stable gamma alumina by adding the heat treatment in hydrogen atmosphere at 500°C for 1 hour, and the source of organic silicon, organosilicon sealant, was removed. At Hamaoka Unit 4 and 5 improved catalysts were applied. Moreover, linseed oil that used to be used at the plants was applied again as sealant of the low-pressure turbine casing instead of the organosilicon sealant. As a result of application of these countermeasures, the reactors could be started without increase of the hydrogen concentration at these plants.
APA, Harvard, Vancouver, ISO, and other styles
7

Edmiston, Paul L., Justin Keener, Scott Buckwald, Bob Sloan, and John Terneus. "Flow Back Water Treatment Using Swellable Organosilica Media." In SPE Eastern Regional Meeting. Society of Petroleum Engineers, 2011. http://dx.doi.org/10.2118/148973-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Sugiyama, Hisashi, Takashi Inoue, Akiko Mizushima, and Kazuo Nate. "Alkali-Developable Organosilicon Positive Photoresist(OSPR)." In 1988 Microlithography Conferences, edited by Scott A. MacDonald. SPIE, 1988. http://dx.doi.org/10.1117/12.968328.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Cunningham, Jr., Wells C., Janet C. McFarland, and Chan-Eon Park. "Characterization Of A New Organosilicon Photoresist." In Hague International Symposium, edited by Harry L. Stover and Stefan Wittekoek. SPIE, 1987. http://dx.doi.org/10.1117/12.975611.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Cunningham, Jr., Wells C. "Characterization of a New Organosilicon Photoresist." In Microlithography Conference, edited by Murrae J. Bowden. SPIE, 1987. http://dx.doi.org/10.1117/12.940305.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Organosilice"

1

Zhao, G. Synthesis of organosilicon compounds. Office of Scientific and Technical Information (OSTI), January 1996. http://dx.doi.org/10.2172/453770.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Xie, Ren. Syntheses and studies of organosilicon compounds. Office of Scientific and Technical Information (OSTI), February 1999. http://dx.doi.org/10.2172/348883.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Seyferth, Dietmar. Organosilicon Compounds and Polymers and Silicon Ceramics. Fort Belvoir, VA: Defense Technical Information Center, March 1989. http://dx.doi.org/10.21236/ada206589.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Fenton, Kyle R., Ganesan Nagasubramanian, Chad L. Staiger, Harry D. Pratt, III, Susan B. Rempe, Kevin Leung, Mangesh I. Chaudhari, and Travis Mark Anderson. Organosilicon-Based Electrolytes for Long-Life Lithium Primary Batteries. Office of Scientific and Technical Information (OSTI), September 2015. http://dx.doi.org/10.2172/1222982.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Parikh, Bosky. Synthesis, characterization and catalytic studies of N-doped ordered mesoporous carbons and functionalized periodic mesoporous organosilicas. Office of Scientific and Technical Information (OSTI), December 2017. http://dx.doi.org/10.2172/1505185.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Kim, H. C. Templating Organosilicate Vitrification Using Unimolecular Self Organizing Polymers: Evolution of Morphology and Nanoporosity Development with Network Formation. Office of Scientific and Technical Information (OSTI), December 2004. http://dx.doi.org/10.2172/839714.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Organosilice' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography